Electroluminescent display where each pixel can emit light of any EIA color index

Abstract

A display system, having an emissive body, varying light emitted from the surface in a way that each area becomes a pixel. The emissive body can be a FIPEL type device. Light can be both color varied and also color temperature controlled. The light color is changed by changing a frequency used to drive the body. Multiplexers can be used to reduce the number of generators needed.

What is claimed is:  
     
       1. A display system, comprising
 an emissive body, having an emissive surface, arranged into multiple separate areas, each area defining a pixel of a display being displayed, 
 a pixel control circuit that receives first information indicative of a color of a pixel of the display, and second information indicative of a white balance, and combines said first and second information to create a signal indicative of a merged color; 
 a plurality of signal generators, respectively connected to drive different areas on said emissive body, where a frequency of each of the signal generators is controlled by a level of the signal indicative of the merged color, to vary a color emitted by each separate area of the emissive body, being driven by the signal generator, 
 anywhere between a level of R, G and B being controlled according to any color bound by a triangle in a chromaticity diagram that bounds all NTSC colors, and the level being controlled by the frequency of the signal generators; 
 wherein each said area becomes a pixel of the display by displaying a color of the pixel. 
 
     
     
       2. The display system as in  claim 1 , wherein each area has a red component, a green component, and a blue component, all of which are displayed at the same time. 
     
     
       3. The display system as in  claim 1 , further comprising multiplexers that control each signal generator controlling colors of multiple ones of said separate areas, by connecting said signal generator to different areas. 
     
     
       4. The display system as in  claim 3 , wherein said multiplexers connect the signal generators to plural different pixels which have the same color at the same time. 
     
     
       5. The display system as in  claim 1 , further comprising a controllable spatial light modulator, having multiple individual controllable pixels, said multiple pixels being illuminated by said emissive body, and said pixels each modulating the light from said emissive body. 
     
     
       6. The display system as in  claim 5 , wherein said spatial light modulator is liquid crystal, forming a liquid crystal display. 
     
     
       7. The display system as in  claim 6  wherein said spatial light modulator is composed of elements that are one of: TFT, VA, IPS, IGZO or an electrowetting display. 
     
     
       8. The display system as in  claim 1 , wherein the display system is a television. 
     
     
       9. This display system as in  claim 1  wherein the display system is in a portable computer. 
     
     
       10. The display system as in  claim 9 , wherein said portable computer is one of a tablet, cell phone, or PDA. 
     
     
       11. A method of display, comprising
 controlling an emissive body, having an emissive surface, such that each of multiple separate areas are controlled to emit in separate colors, each area defining a pixel of a display being displayed, said controlling comprising receiving first information indicative of a color of a pixel of the display, receiving second information indicative of a white balance, and combining said first and second information to create a signal indicative of a merged color, and using signals indicative of the merged color to control respective frequencies of a plurality of signal generators, where a frequency of each of the signal generators is controlled by a level of the signal indicative of the merged color, 
 connecting the frequency from the signal generator to different areas on said emissive body, said controlling varying the frequency output of the signal generators to vary a color emitted by each separate area of the emissive body being driven by the signal generator, anywhere within a triangle in a chromaticity diagram that bounds all NTSC colors; 
 displaying such that each said area becomes a pixel of the display by displaying a color of the pixel. 
 
     
     
       12. The method of display as in  claim 11 , further comprising varying said color by varying a frequency of said signal generators for each area to have a red component, a green component, and a blue component, all of which are displayed at the same time. 
     
     
       13. The method of display as in  claim 11 , further comprising multiplexing a control of the signal generators to control colors of multiple ones of said separate areas, by connecting a signal generator to different areas. 
     
     
       14. The method of display as in  claim 13 , wherein said multiplexers connect the signal generators to plural different pixels which have the same color at the same time. 
     
     
       15. The method of display as in  claim 11 , further comprising controlling a controllable spatial light modulator, having multiple individual controllable pixels, said multiple pixels being illuminated by said emissive body, and said pixels each modulating the light from said emissive body. 
     
     
       16. The method of display as in  claim 15 , wherein said spatial light modulator is liquid crystal, forming a liquid crystal display. 
     
     
       17. The method of display as in  claim 16  wherein said spatial light modulator is composed of elements that are one of:
 TFT, VA, IPS, IGZO or an electrowetting display. 
 
     
     
       18. The method of display as in  claim 11 , wherein the method of display is in a television. 
     
     
       19. This method of display as in  claim 11  wherein the method of display is in a portable computer. 
     
     
       20. The method of display as in  claim 19 , wherein said portable computer is one of a tablet, cell phone, or PDA.